Abstract
The present study aimed to establish exercise preferences, barriers, and perceived benefits among head and neck cancer survivors, as well as their level of interest in participating in an exercise program. Patients treated for primary squamous cell carcinoma of the head and neck between 2010 and 2014 were identified from the hospital database and sent a postal questionnaire pack to establish exercise preferences, barriers, perceived benefits, current physical activity levels, and quality of life. A postal reminder was sent to non-responders 4 weeks later. The survey comprised 1021 eligible patients of which 437 (43%) responded [74% male, median (interquartile range) age, 66 (60–73) years]. Of the respondents, 30% said ‘Yes’ they would be interested in participating in an exercise program and 34% said ‘Maybe’. The most common exercise preferences were a frequency of three times per week, moderate-intensity, and 15–29 min per bout. The most popular exercise types were walking (68%), flexibility exercises (35%), water activites/swimming (33%), cycling (31%), and weight machines (19%). Home (55%), outdoors (46%) and health club/gym (33%) were the most common preferred choices for where to regularly exercise. Percieved exercise benefits relating to improved physical attributes were commonly cited, whereas potential social and work-related benefits were less well-acknowledged. The most commonly cited exercise barriers were dry mouth or throat (40%), fatigue (37%), shortness of breath (30%), muscle weakness (28%) difficulty swallowing (25%), and shoulder weakness and pain (24%). The present findings inform the design of exercise programs for head and neck cancer survivors.
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Introduction
A mounting body of scientific evidence has shown that physical exercise improves aerobic fitness, strength, physical activity levels, and quality of life, and reduces fatigue in cancer survivors during and post treatment [1,2,3]. Decreased mortality also has been observed [4]. Accordingly, to promote safe and effective exercise, general cancer and cancer type-specific exercise prescription guidelines have been published [5,6,7]. An important issue is that sufficient research to support guidelines for less prevalent cancers do not exist and has resulted in the extrapolation of research findings from other cancers [6]. When considering certain cancers often differing in symptoms and treatment strategies, the need for more research to optimise exercise program design for survivors of less prevalent cancers is apparent.
Head and neck cancer represents a diverse set of tumours of the larynx, oropharynx, oral cavity, nasopharynx, nose, and paranasal sinuses [8], with an annual worldwide incidence of over 500,000 [9]. Symptoms consistent with other cancer types include pain, depression, fatigue, and intolerance to physical activity [10, 11]. Other symptoms such as weight loss, head and neck oedema, dry mouth, mouth sores, dysphagia, and shoulder pain and dysfunction are specific to or more dominant in head and neck cancer [10, 12]. Another notable consideration is that individuals presenting with head and neck cancer historically are typically older, with prolonged exposure to smoking tobacco and high levels of alcohol consumption [13]. Comorbidities such as heart and lung disease are therefore typically more prevalent in head and neck cancer survivors [14]. There also has been an increase in younger and fitter individuals presenting with head and neck cancer due to a marked increased prevalence in the human papillomavirus [15]. The cancer-specific symptoms and heterogeneity in head and neck cancer cohorts make the identification of evidence-based exercise guidelines an important challenge for the future.
Only 9% of head and neck cancer survivors have been reported to meet physical activity guidelines after cancer diagnosis [16]. Encouraging exercise uptake and adherence should therefore be an important aspect of their clinical care. Establishing exercise preferences and perceived barriers are important in designing exercise programs that will facilitate uptake and adherence. Although these were previously investigated in the United States [14, 17], the findings were from relatively small samples and might not directly apply to the UK due to cultural and health-care system differences [18, 19]. Another issue is that the percentage of head and neck cancer survivors who regularly engage in exercise is low [16], however, only 17% were reported to feel unable to engage in exercise [14]. Most therefore feel able to engage in regular exercise, but choose not to. An important avenue of enquiry in exploring this issue is establishing the extent to which exercise is perceived as beneficial, since weighing perceived benefits against perceived negative aspects of adopting a behaviour is an important step in deciding whether to adopt that behaviour [20]. Perceived exercise benefits among head and neck cancer survivors have not yet been investigated, however.
The main aim of the present study was to establish exercise preferences, barriers, and perceived benefits among a relatively large sample of head and neck cancer survivors in the UK. A secondary aim was to investigate the level of interest in participating in an exercise program for head and neck cancer survivors, as well as factors associated with between-subject differences in the level of interest.
Methods
Participants
University Hospital Aintree is the largest single centre head and neck cancer unit in the UK and in a geographical location with the fourth highest multiple index of deprivation in England [21]. A cohort of patients treated for primary squamous cell carcinoma of the head and neck at the hospital between 2010 and 2014 was identified from the hospital head and neck cancer database. Patients with cutaneous and salivary gland malignancy, patients treated with palliative intent, and patients with recurrence and ongoing disease were excluded. Patients were at least 18 years of age, without known dementia, or other mental condition that could affect their ability to complete the questionnaires used in the study. Mortality status was checked and in February 2016 postal questionnaire packs were sent to all patients known to be alive and disease-free, with reminders sent to non-responders 4 weeks later. Electronic records provided information on clinical characteristics, such as age, gender, year of diagnosis, and treatment. The study received favourable opinion from the Cambridge South NHS Research Ethics Committee (Ref. 15/EE/0429).
Questionnaire pack
The questionnaire pack contained a covering letter about the survey, instructions on completing the questionnaires, a stamped addressed envelope for return, and the following six questionnaires: (1) exercise preferences; (2) perceived exercise benefits [22]; (3) exercise barriers [17]; (4) Godin leisure time exercise questionnaire [23]; (5) University of Washington quality of life (UW-QoL) Questionnaire version 4 [24]; and (6) ‘Other information’. The Exercise Preferences questionnaire asked whether participants would be able to participate in an exercise program for head and neck cancer survivors and whether they would be interested in participating. Respondents declaring an interest were asked to answer questions regarding exercise preferences for frequency, intensity, time, and type of exercise, preference for starting the exercise program in relation to the timing of their treatment, and preferred exercise program duration and locations. The perceived exercise benefits questionnaire asked “How do you feel regular physical exercise would/does benefit you?” and provided a list of ten potential benefits previously used in a study involving breast cancer survivors [22]. Each benefit was scored on a Likert scale ranging from 0 (Strongly disagree) to 4 (Strongly agree). The exercise barriers questionnaire asked ‘Regardless of whether you currently exercise, how often do you think the following does/would interfere with your ability to exercise?’ 37 potential barriers were listed, 33 of which were taken from Rogers et al. [17]. The additional four barriers were depression/anxiety, feeding tube, difficulty drinking, and lack of transport. Responses were scored on a Likert scale ranging from 1 (Never) to 5 (Very often). The Godin leisure time exercise questionnaire is a validated measure of self-reported exercise in the community and establishes average weekly frequency of engagement in mild, moderate, and strenuous exercise performed for at least 15 min at a time [23]. The UW-QoL questionnaire data [24, 25] will be reported elsewhere. The ‘other information’ questionnaire asked about age at leaving full-time education, cancer treatment and any recurrence, presence of a feeding tube into the stomach, and co-morbidities.
Statistical methods
The Chi-squared test was used to compare three groups of respondents (yes interested in participation, maybe interested in participation, not interested in participation) in regard to perceived exercise benefits, exercise barriers, intensity of weekly leisure time exercise, demographic and clinical factors. Statistical significance was accepted as p < 0.05. Analyses were performed using SPSS v19 (SPSS Inc., Chicago, IL).
Results
The survey sample (January 2010–October 2014) comprised 1021 eligible head and neck cancer survivors of which 437 (43%) responded, although 7 of these were omitted from the analyses due to scarcity of questionnaire responses. Lower response was noted for participants aged under 55 years (29%) and over 85 years (36%), but the response was typically 36–50% with no obvious biases when stratified by gender, time from diagnosis, tumour site, squamous cell carcinoma diagnosis, clinical TN staging, treatment group and surgical free-flap status. Median (IQR) time from cancer diagnosis to survey was 43 (30–58) months. The median (IQR) age at survey was 66 (60–73) years and men accounted for 74% (317/430) of respondents. Primary tumours were oral (28%, 122), laryngeal (20%, 86), oro-pharyngeal (41%, 176) and others (11%, 46). The clinical T stage of 27% (113/421) was late (stages 3–4), and the clinical N stage of 39% (164/423) was positive. Primary diagnosis was squamous cell carcinoma for 90% (347/385). Primary treatment comprised surgery alone (41%, 175), surgery with adjuvant radiotherapy/chemotherapy (33%, 143), or primary chemo-radiotherapy alone (26%, 112). Free-flaps were used from almost one quarter (23%, 72/313) of surgical patients and 7% (30/418) of respondents stated they currently had a feeding tube into their stomach. Recurrence of head and neck cancer had occurred in 12% (51/415) of respondents. Two-thirds (67%, 269/399) were 16 years old when they left full-time education.
When asked if interested in participating in an exercise program for head and neck cancer survivors, 64% (267/419) either stated ‘Yes’ (30%, 124) or ‘Maybe’ (34%, 143). Of those with strongest interest, 90% (111/124) stated ‘Yes’ they would be able to participate, and 10% stated ‘Maybe’. In those with lesser interest only 30% (43/143) stated ‘Yes’ they would be able to participate. One-third of the 267 expressing interest had no preference for exercise frequency, with another third preferring 2 or 3 days per week (Table 1). About half (49%) preferred a program of moderate intensity, with 20% unsure or having no preference. About half (48%) felt physically able to exercise for < 30 min, 71% for < 60 min and only 8% for ≥ 60 min, with 21% unsure or unstated. A similar response was observed for preferred exercise duration, with those less interested in participating preferring shorter exercising times, with 18% (vs 5% in those with stronger interest) preferring < 15 min. There was little enthusiasm for starting an exercise program before (3%) or during treatment (2%), with more support for starting within a year after treatment (17%) and after 1 year (18%). Most though either had no preference on when to start (30%), or were unsure or did not state (30%). Those more interested in participating felt able to start the exercise program earlier. Preferred program length was ≤ 12 weeks for 26% and > 12 weeks for 26%, and 42% had no preference. Those with less interest in participating preferred shorter programs. The most preferred activities were walking (68%), flexibility exercises (35%), water activities/swimming (33%), cycling (31%), and weight machines (19%). Home (55%), outdoors (46%) and health club/gym (33%) were the most popular choices for where to regularly perform exercise. Those with less interest in participating were more likely to prefer exercising at home (65 vs 44%) than in a health club or gym (21 vs 47%).
The section on perceived benefits of regular physical exercise (Table 2) was answered by 95% (254/267) of those expressing an interest in participating in an exercise program versus 78% (118/152) of those not interested. The greatest perceived benefits were improving heart and lung fitness (84%), improving health or reducing risk of disease (76%) and building up muscle strength (75%), and lowest for doing better on their job (34%), feeling more attractive (37%) and meeting new people (45%). There was a clear trend for higher perceived benefits from those with more interest in participating. The biggest absolute disparities between those more and less interested were for depression, tension and stress, and self-esteem.
The section on barriers to exercise (Table 3) was answered by 98% (261/267) of those expressing an interest in participating in an exercise program and 78% (118/152) of those not interested. The highest rates of scoring as 4 or 5 (very often) on the 5-point barriers scale were for dry mouth or throat (40%), fatigue (37%), shortness of breath (30%), muscle weakness (28%), and difficulty swallowing (25%), with rates for another 13 issues ranging between 20 and 24%. Those not interested in participating were more likely to cite ‘lack of enjoyment’, ‘exercise not a priority’, ‘exercise is boring’ and ‘lack of interest’ as barriers to exercise. They also were less likely to cite ‘lack of equipment’ and ‘lack of facilities and/or space’. Otherwise, the potential barriers were similar regardless of interest in participation.
Further analysis focussed on identifying factors associated with interest in participation. These included current leisure time exercise of > 15 min’ duration one or more times a week, quality of life status, and current clinical and demographic factors. Engagement in strenuous exercise was reported by 12% (51/430), with median (IQR) duration 60 (30–75) min, moderate exercise by 24% (104/428), median (IQR) duration 45 (30–60) min, and mild exercise by 52% (218/417), with median (IQR) duration 40 (30–90) min. One-third (35%, 146/416) did no exercise for > 15 min during their free-time, and of those that did, their median (IQR) weekly leisure activity score was 21 (12–30). Greater current engagement in more intense exercise was associated with greater interest in participating in an exercise program (Table 4), ranging from 52% interest if doing strenuous exercise to 23% if doing no exercise.
Participant age was a strong indicator of interest in program participation (Table 5), with more than half of those aged > 75 years not being interested. There were no notable associations regarding gender and clinical factors (tumour location, staging, diagnosis & treatment, time from diagnosis) pertaining at the time of primary diagnosis (results not shown). Those whose cancer had returned and those who had chemotherapy showed more interest in participation. Nearly half (48%) stated one or more medical conditions that could impact on their ability to perform exercise and this group had slightly more interest in participating than those not stating any conditions. The three main groups of conditions were joint/mobility-related (92 participants), heart-related (49) and lung-related (46), though for the latter there was less interest in participating.
Discussion
The main aim of the present study was to establish exercise preferences, barriers, and perceived benefits among a relatively large sample of head and neck cancer survivors in the UK. A secondary aim was to investigate the level of interest in participating in an exercise program for head and neck cancer survivors, as well as the factors associated with between-subject differences in level of interest. Main findings were that 64% of respondents expressed an interest in participating in an exercise program, with greater interest associated with younger age, lower social-emotional aspects of quality of life, absence of lung-related co-morbidity, greater current levels of physical activity, greater perceived exercise benefits, and lower scores on certain barriers to exercise. Exercise preferences were diverse; however, the most popular were a frequency of three times per week, moderate-intensity, 15–29 min per bout, and consisting of walking, swimming, cycling, and flexibility and resistance training exercises. The most commonly cited exercise barriers were symptoms specific to head and neck cancer.
The 30% of respondents in the present study interested and 34% maybe interested in participating in an exercise program were similar to the 33 and 38%, respectively, reported by Rogers et al. [14] for 90 head and neck cancer survivors in the USA. Encouragingly, the most popular exercise program preferences were relatively consistent with current cancer physical activity guidelines [5,6,7]. A notable exception is that a higher frequency and/or duration would be needed to accumulate the recommended minimum of 150 min of moderate intensity ‘aerobic’ exercise and resistance training on at least 2 days per week [6, 7]. The most popular exercise preferences are useful for designing group-based exercise programs delivered in the community, which dominate the current 312 registered UK cardiac rehabilitation programs [26]. Exercise preferences in the present study were diverse, however, particularly between those more versus less interested in participating in an exercise program. These results emphasise the importance of individuality as a fitness training principle [27] when designing exercise programs for head and neck cancer survivors. Of note is that 55% of interested respondents preferred to exercise at home, with relatively few preferring to exercise in a community (10%) or hospital (12%) centre. This is consistent with a previous observation that 82% of head and neck cancer survivors who showed a preference, favoured unsupervised rather than supervised exercise [14]. The UK cardiac model of group-based exercise programs delivered in a community setting, with home-based programs accounting for only 10% of the total [26], may not therefore be an effective strategy for exercise program design in head and neck cancer survivors. Further support for home-based programs is that no differences in outcomes have been observed between home-based and centre-based exercise programs [28]. There has been a growing interest in telehealth for the remote delivery of exercise programs in clinical populations (e.g., [29]). This may be a particularly effective strategy for delivering home-based exercise programs in head and neck cancer survivors in the UK, given the large distances many head and neck cancer survivors would need to travel to attend their nearest rehabilitation centre.
The most commonly cited exercise barriers in the present study were dry mouth or throat, fatigue, shortness of breath, muscle weakness, difficulty swallowing, and shoulder weakness and pain, which are all dominant symptoms associated with head and neck cancer [10, 12]. These findings are largely consistent with those of Rogers et al. [16], but contrast with those reported for the general adult population, where lack of time and motivation dominate (e.g. [30]). Given the considerable benefits that head and neck cancer survivors can expect from exercise engagement [31], these findings emphasise the importance of providing advice on how to negate or manage disease-specific exercise barriers during standard clinical care. Dry mouth/throat was the most common barrier to exercise expressed by participants in the present study and caregivers should be particularly mindful of the management of these [32], as well as providing advice regarding avoidance of exercise in cold air to prevent exacerbating symptoms [33].
Little research has investigated the perceived benefits of exercise in cancer survivors and, to the best of our knowledge, none has investigated perceived benefits amongst head and neck cancer survivors. The mean values for perceived exercise benefits observed in the present study were lower on all ten items than reported by Spector et al. [22] for breast cancer survivors. The mean values for doing better on my job, improving body shape, feeling more attractive, and meeting new people were the lowest and represented the greatest negative difference compared to those reported by Spector et al. [22]. This might reflect gender differences in perceptions, since 74% of respondents in the present study were men compared to all women in the study by Spector et al. [22]. In the present study, level of interest in participating in an exercise program was positively associated with perceived benefits. This is consistent with the transtheoretical model of behaviour change, which postulates that perceived benefits are important in favourably modifying the decisional balance of the relative weighing of the positive and negative aspects of changing [20]. Of note is that only 13% of participants interested in participating in an exercise program, who also expressed a preference of when they would have felt able to start, felt able to start the program before or during cancer treatment. This is despite mounting evidence of the physical and psychological benefits of exercise before [34] and during treatment [1, 3]. These findings suggest that educating head and neck cancer survivors on the potential benefits of exercise should be an integral part of standard clinical care and should ideally be undertaken soon after time of diagnosis.
To our knowledge, this is the first study to investigate exercise preferences, barriers, and perceived benefits in a relativity large sample of head and neck cancer survivors, and the first in the UK. A limitation of the study was the poor questionnaire response rate of 43%, which is likely somewhat related to the burden of responding to multiple questionnaires in the questionnaire pack. It is also plausible that non-responders were less likely to have been physically active, or interested in participating in an exercise program for head and neck cancer survivors.
Conclusion
These findings provide exercise preferences to guide exercise program design for head and neck cancer survivors. Exercise barriers specific to head and neck cancer were commonly cited and need addressing to promote exercise uptake and adherence. The need for education on the potential benefits of exercise to promote greater exercise uptake and adherence also was apparent, particularly for those not interested or less interested in participating in an exercise program.
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Acknowledgements
The authors are sincerely grateful to all participants who gave up their time to make this study possible and to the Patient and Carers Research Forum at University Hospital Aintree for their feedback and advice during the design of the study and on the content of the questionnaire pack. We also thanks Joanne Earley for identifying eligible patients on the hospital database and for posting the questionnaire packs.
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All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.
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Midgley, A.W., Lowe, D., Levy, A.R. et al. Exercise program design considerations for head and neck cancer survivors. Eur Arch Otorhinolaryngol 275, 169–179 (2018). https://doi.org/10.1007/s00405-017-4760-z
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DOI: https://doi.org/10.1007/s00405-017-4760-z